<?php 

// header("Content-type: text/html; charset=utf-8");


	date_default_timezone_get("PRC");
	echo "<br>";
	echo Date('Y/m/d H/i/s');
	echo "<br>";
	echo time();

	echo "<br>";

	echo Date("Y-m-d H-i-s",1452100000);
	echo "<br>";
	echo Date("l");
	echo "<br>";
	echo microtime(true);
	echo "<br>";
	echo microtime();
	echo "<br>";
	echo strtotime("now");
	echo "<br>";
	echo strtotime("+5 hours");
	echo "<br>";
	var_dump(getdate());
	echo "<br>";
	echo "<br>";


	$a=21.45564;

	// var_dump(ceil($a));


	echo floor($a);
	echo "<br>";
	$b=[45,5454,1,5,6,9,];
	echo min($b);
	echo "<br>";
	echo max($b);
	echo "<br>";
	echo round($a);
	echo "<br>";

	echo mt_rand(1,10);
	//随机出现一个整数
	

	echo "<br>";

	$arr=array('北京','广州','上海');

	echo $arr[0];

	echo "<br>";
	echo "<br>";
	include "./lianxi.php";
	echo "<br>";
	require"../05_06/jiujiu.php";










 ?>